Hospital information system audit is to use various auditing methods including computer auditing technology to reveal the problems existing in the operation, management and use of the information system, plug loopholes, standardize the management mode and process, and constantly improve the mechanism to judge whether the information system operates normally, whether the design meets the needs of developing management affairs, whether it can effectively protect assets, maintain data integrity, comprehensively and accurately reflect the income and expenditure structure and balance in real time, and protect the economic interests of patients and hospitals.

Audit content. This paper mainly reviews the standardization and effectiveness of internal control of outpatient management information system, and verifies the authenticity and accuracy of financial data. The control of outpatient management information system includes organization management control, data resource management control and operation management control. Organize the audit of management control, mainly to check whether the control objectives of separation of duties and personnel management are realized; Data resource management audit mainly checks whether the security and integrity of data are guaranteed and whether it meets the specific requirements including backup control, access control, confidentiality control and storage control; Operation management control audit mainly checks whether the whole system runs normally and harmoniously, whether the system documents and logs are safe, and whether the compatibility and security of software and hardware meet the standards.

Audit methods. We can comprehensively use discussion, data collection, conversion, comprehensive application, calculation, classification, sampling selection, sorting, data record group and comparison, and combine computer data analysis technology to select some relevant data that meet the audit conditions, test the system process, check the authenticity and integrity of financial data, and truly reflect the economic operation of the hospital. This paper analyzes the weak links found in the audit, and puts forward some suggestions on improving and strengthening the outpatient management information system, so as to promote the standardization of hospital management and realize the high benefit and efficiency of operation.